CN103601305A - Composite scale and corrosion inhibitor for ammonium-nitrogen-containing circulating cooling water - Google Patents
Composite scale and corrosion inhibitor for ammonium-nitrogen-containing circulating cooling water Download PDFInfo
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- CN103601305A CN103601305A CN201310619210.4A CN201310619210A CN103601305A CN 103601305 A CN103601305 A CN 103601305A CN 201310619210 A CN201310619210 A CN 201310619210A CN 103601305 A CN103601305 A CN 103601305A
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- 238000005260 corrosion Methods 0.000 title claims abstract description 48
- 230000007797 corrosion Effects 0.000 title claims abstract description 48
- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 239000003112 inhibitor Substances 0.000 title claims abstract description 36
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 239000000498 cooling water Substances 0.000 title claims abstract description 16
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000002253 acid Substances 0.000 claims abstract description 14
- 108700004121 sarkosyl Proteins 0.000 claims abstract description 12
- KSAVQLQVUXSOCR-UHFFFAOYSA-M sodium lauroyl sarcosinate Chemical compound [Na+].CCCCCCCCCCCC(=O)N(C)CC([O-])=O KSAVQLQVUXSOCR-UHFFFAOYSA-M 0.000 claims abstract description 12
- 230000002401 inhibitory effect Effects 0.000 claims description 35
- 229920002472 Starch Polymers 0.000 claims description 21
- 235000019698 starch Nutrition 0.000 claims description 21
- 239000008107 starch Substances 0.000 claims description 19
- 235000011187 glycerol Nutrition 0.000 claims description 13
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 claims description 9
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 230000005764 inhibitory process Effects 0.000 abstract description 13
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 12
- 239000010865 sewage Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 6
- 239000002455 scale inhibitor Substances 0.000 abstract description 4
- KIOHKYKNIXESSZ-UHFFFAOYSA-N 1,3,5-triazine-2,4,6-tricarboxylic acid Chemical compound OC(=O)C1=NC(C(O)=O)=NC(C(O)=O)=N1 KIOHKYKNIXESSZ-UHFFFAOYSA-N 0.000 abstract description 2
- 229920000881 Modified starch Polymers 0.000 abstract 3
- 239000004368 Modified starch Substances 0.000 abstract 3
- 235000019426 modified starch Nutrition 0.000 abstract 3
- 108010068370 Glutens Proteins 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 235000021312 gluten Nutrition 0.000 abstract 1
- 239000002075 main ingredient Substances 0.000 abstract 1
- 229940045885 sodium lauroyl sarcosinate Drugs 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000010937 tungsten Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 45
- 238000012360 testing method Methods 0.000 description 33
- 239000003814 drug Substances 0.000 description 22
- 239000007788 liquid Substances 0.000 description 12
- 239000000203 mixture Substances 0.000 description 12
- 239000002585 base Substances 0.000 description 11
- 229940079593 drug Drugs 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 235000010216 calcium carbonate Nutrition 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 208000016261 weight loss Diseases 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- 150000003751 zinc Chemical class 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention relates to a composite scale and corrosion inhibitor for ammonium-nitrogen-containing circulating cooling water, which is adopted when ammonium-nitrogen-containing sewage is used for circulating cooling water. The composite scale and corrosion inhibitor adopts 2-pentadecyl-1-(maleic amide)-ethyl-imidazoline and modified starch as main ingredients, wherein the 2-pentadecyl-1-(maleic amide)-ethyl-imidazoline is a corrosion inhibitor which is better in corrosion inhibition while being independently used; the modified starch is a natural and degradable scale inhibitor which has problems of being large in dosage, not good in treatment effect and easy to decompose. According to the composite scale and corrosion inhibitor for ammonium-nitrogen-containing circulating cooling water disclosed by the invention, the 2-pentadecyl-1-(maleic amide)-ethyl-imidazoline and the modified starch are compounded and then added with a little p-amido benzoyl gluten acid, sodium lauroyl sarcosinate, dodeca-tungsten polyoxometallate, 1,3,5-triazine-2,4,6-tricarboxylic acid and glycerol to obtain the composite scale and corrosion inhibitor which is good in corrosion inhibition effect and scale inhibition effect; besides, calcium carbonate scale inhibition rate is over 99.7%, and carbons steel corrosion rate is lower than 0.027 (mm/a).
Description
Technical field
The present invention relates to a kind of anti-incrustation corrosion inhibitor, relate in particular to a kind of adopt when reclaiming for recirculated cooling water containing ammonia-nitrogen sewage containing ammonia nitrogen recirculated cooling water composite scale-inhibiting corrosion inhibitor.
Background technology
A large amount of sewage containing ammonia nitrogen that can produce in oil refining process, normally send sewage work to carry out discharging after secondary biochemical treatment.This is current water scarcity, is a kind of greatly waste.If further will be an effective way that solves enterprise's shortage of water resources to process and be back to recirculated cooling water containing the sewage of ammonia nitrogen.In recycling process, to solve the problems such as inhibition, scale inhibition and microorganism and foundry loam control.Chinese patent application CN1258649A discloses a kind of Recompounded multielement antisludging corrosion inhibitor, this anti-incrustation corrosion inhibitor mainly includes machine phosphoric acid, contains sulfonic group multipolymer and zinc salt, can be used for the processing through the petrochemical wastewater of secondary biochemical treatment, its shortcoming is that this Recompounded multielement antisludging corrosion inhibitor can only the circulating water treatment as moisturizing for the petrochemical wastewater of ammonia-nitrogen content few (0.14-1.88mg/L).CN1234625C discloses a kind of composite scale-inhibiting corrosion inhibitor that is applicable to being back to containing ammonia-nitrogen sewage recirculated cooling water; This composite scale-inhibiting corrosion inhibitor comprises poly-phosphate or phosphoric acid salt, organic phosphoric acid, contains sulfonic group multipolymer and zinc salt; Contain a large amount of organophosphoruss and inorganic phosphorus, can cause secondary pollution to environment.
Due to the requirement of environment protection, countries in the world start the discharge of phosphorus restriction, and exploitation low-phosphorous, without phosphorus and non-heavy metal anti-incrustation corrosion inhibitor has obtained more concern.Since particularly entering 21 century, water treatment scale and corrosion inhibitor is just towards Nonpoisonous, non-environmental-pollution, biodegradable and eco-friendly future development.
Summary of the invention
The object of the present invention is to provide a kind of not phosphorous and possess efficient scale inhibition efficiency containing ammonia nitrogen recirculated cooling water composite scale-inhibiting corrosion inhibitor.
Technical scheme of the present invention:
Containing an ammonia nitrogen recirculated cooling water composite scale-inhibiting corrosion inhibitor, by following component, formed;
2-pentadecyl-1(maleinamide) 12 parts of-ethyl-tetrahydroglyoxalines,
Treated starch 15-20 part,
P-benzoyl base seitan acid 1.3-1.5 part,
Sodium N-lauroyl sarcosinate 2.3-2.8 part,
12 heteropoly tungstate 1.7-2.5 parts,
1,3,5-triazines-2,4,6-tricarboxylic acid 1.5-2.1 part,
Glycerine 3-5 part;
Described umber is weight part.
Above-mentioned containing ammonia nitrogen recirculated cooling water composite scale-inhibiting corrosion inhibitor, the optimum ratio of each component is:
2-pentadecyl-1(maleinamide) 12 parts of-ethyl-tetrahydroglyoxalines,
18 parts of treated starches,
1.4 parts of p-benzoyl base seitan acid,
2.5 parts of sodium N-lauroyl sarcosinates,
12 2.0 parts of heteropoly tungstates,
1,3,5-triazines-2,1.8 parts of 4,6-tricarboxylic acid,
4 parts of glycerine.
Above-mentioned containing ammonia nitrogen recirculated cooling water composite scale-inhibiting corrosion inhibitor, being applicable to ammonia nitrogen concentration is that 1-23mg/L, ph are the ammonia-nitrogen sewage that contains of 6.3-9.4, and with respect to the effective concentration of pending solution total amount, is 15-20mg/L.
Of the present invention containing ammonia nitrogen recirculated cooling water composite scale-inhibiting corrosion inhibitor, using 2-pentadecyl-1(maleinamide)-ethyl-tetrahydroglyoxaline and treated starch be as main component.Wherein, 2-pentadecyl-1(maleinamide)-ethyl-tetrahydroglyoxaline is a kind of inhibiter; Use separately, corrosion inhibition is poor; During with the composite use of thiocarbamide, possesses good corrosion inhibition; But thiocarbamide is poisonous, can absorb through skin, and environment is worked the mischief; Do not meet Nonpoisonous, non-environmental-pollution, biodegradable and eco-friendly requirement.Treated starch, is a kind of natural, degradable Scale inhibitors, but exist, consumption is large, treatment effect is bad, labile problem.The present invention is by 2-pentadecyl-1(maleinamide)-ethyl-tetrahydroglyoxaline and treated starch is composite then adds a small amount of acid of p-benzoyl base seitan, sodium N-lauroyl sarcosinate, 12 heteropoly tungstates, 1,3,5-triazine-2,4,6-tricarboxylic acid, glycerine, thus corrosion mitigating effect and the good composite scale-inhibiting corrosion inhibitor of scale inhibition effect tool obtained; Resistance calcium carbonate scale rate is up to more than 99.7%; Corrosion of carbon steel speed is lower than 0.027(mm/a).Find after deliberation 2-pentadecyl-1(maleinamide)-ethyl-tetrahydroglyoxaline and treated starch can interact, thereby improve 2-pentadecyl-1(maleinamide simultaneously) inhibition efficiency of-ethyl-imidazoles and the dispersion effect of treated starch.And the acid of p-benzoyl base seitan, sodium N-lauroyl sarcosinate, 12 heteropoly tungstates and 1; 3; 5-triazine-2; 4; the existence of four kinds of compositions of 6-tricarboxylic acid; can promote 2-pentadecyl-1(maleinamide)-ethyl-imidazoles and the interaction of treated starch and the stability of treated starch, thus make the composite scale-inhibiting corrosion inhibitor scope of application of the present invention wider.
Embodiment
In the < < water coolant analysis that the following examples are all write according to production department of China PetroChemical Corporation and development division and test method > > (1993 general petrochemical works, Nian， Anqing information centers publish), " tosca method " and " rotary hanging plate weight-loss method " carries out static-state scale inhibition test and rotary hanging plate corrosion test.In " tosca method ", test influent density is 3 times; In " rotary hanging plate weight-loss method ", test temperature is 40 degree, and examination water rotating speed is 120 revs/min (rpm), and test period is 72h, and lacing film material is carbon steel, the former water of test that test water is concentrated 2 times.The former water of test of subordinate embodiment for from refinery containing ammonia-nitrogen sewage according to a conventional method through secondary biochemical treatment (as activated sludge process), and through the sewage after flocculating settling [as can be at room temperature polymerize aluminum chloride (concentration is 40mg/L) and cationic polyacrylamide (concentration is 2mg/L) successively added wherein as flocculation agent, sedimentation 0.5 hour], secondary filter oil removal (as filtered with high-efficiency fiber bundle filter).Test raw water quality is ammonia nitrogen 2-20mg/L, Ca2+ is (in CaCO3, lower same) 120-200mg/L, total alkalinity (in CaCO3, lower same) 200-380 mg/L, Cl-83.5-142.3 mg/L, SO42-146-63 9mg/L, PH7.4-8.4, specific conductivity 1120-1639us/cm, total molten solid 576-756mg/L, CODcr23-137 mg/L.The CODcr measuring method of water quality is classical chromium method, and remaining < < water coolant of writing with reference to production department of China PetroChemical Corporation and development division is analyzed and test method > >.
embodiment 1
Taking 2-pentadecyl-1(maleinamide)-ethyl-tetrahydroglyoxaline 12g, sodium N-lauroyl sarcosinate 2.5g mix with 4g glycerine; Obtain A component;
Take treated starch 18g, the acid of p-benzoyl base seitan 1.4g, 12 heteropoly tungstate 2.0g, 1,3,5-triazines-2,4,6-tricarboxylic acid 1.8g, adds 38.3g water and mixes, and then mixes with A component; Obtain 80g composite scale inhibiting solution;
With the liquid medicine preparing by the drug concentration of 80mg/L when adding in test water, the effective concentration of composite scale-inhibiting corrosion inhibitor is 15mg/L;
Test raw water quality is: ammonia nitrogen 20mg/L, and Ca2+ 165mg/L, total alkalinity 263mg/L, Cl-110.6mg/L, SO42-334mg/L, pH 9.3, CODCr-48mg/L.
embodiment 2
Taking 2-pentadecyl-1(maleinamide)-ethyl-tetrahydroglyoxaline 12g, sodium N-lauroyl sarcosinate 2.5g mix with 4g glycerine; Obtain A component;
Take treated starch 18g, the acid of p-benzoyl base seitan 1.4g, 12 heteropoly tungstate 2.0g, 1,3,5-triazines-2,4,6-tricarboxylic acid 1.8g, adds 38.3g water and mixes, and then mixes with A component; Obtain 80g composite scale inhibiting solution;
With the liquid medicine preparing by the drug concentration of 80mg/L when adding in test water, the effective concentration of composite scale-inhibiting corrosion inhibitor is 20mg/L;
Test raw water quality is: ammonia nitrogen 20mg/L, and Ca2+ 165mg/L, total alkalinity 263mg/L, Cl-110.6mg/L, SO42-334mg/L, pH 9.3, CODCr-48mg/L.
embodiment 3
Taking 2-pentadecyl-1(maleinamide)-ethyl-tetrahydroglyoxaline 12g, sodium N-lauroyl sarcosinate 2.3g mix with 3g glycerine; Obtain A component;
Take treated starch 15g, the acid of p-benzoyl base seitan 1.3g, 12 heteropoly tungstate 1.7g, 1,3,5-triazines-2,4,6-tricarboxylic acid 1.5g, adds 43.2g water and mixes, and then mixes with A component; Obtain 80g composite scale inhibiting solution;
With the liquid medicine preparing by the drug concentration of 80mg/L when adding in test water, the effective concentration of composite scale-inhibiting corrosion inhibitor is 15mg/L;
Test raw water quality is: ammonia nitrogen 23mg/L, and Ca2+ 194mg/L, total alkalinity 332mg/L, Cl-125.3mg/L, SO42-639mg/L, pH 7.9, CODCr-33mg/L.
embodiment 4
Taking 2-pentadecyl-1(maleinamide)-ethyl-tetrahydroglyoxaline 12g, sodium N-lauroyl sarcosinate 2.8g mix with 5g glycerine; Obtain A component;
Take treated starch 20g, the acid of p-benzoyl base seitan 1.5g, 12 heteropoly tungstate 2.5g, 1,3,5-triazines-2,4,6-tricarboxylic acid 2.1g, adds 34.1g water and mixes, and then mixes with A component; Obtain 80g composite scale inhibiting solution;
With the liquid medicine preparing by the drug concentration of 80mg/L when adding in test water, the effective concentration of composite scale-inhibiting corrosion inhibitor is 20mg/L;
Test raw water quality is: ammonia nitrogen 1.5mg/L, and Ca2+ 174mg/L, total alkalinity 419mg/L, Cl-83.4mg/L, SO42-341mg/L, pH 6.4, CODCr-105mg/L.
embodiment 5
Taking 2-pentadecyl-1(maleinamide)-ethyl-tetrahydroglyoxaline 12g, sodium N-lauroyl sarcosinate 2.3g mix with 4g glycerine; Obtain A component;
Take treated starch 18g, the acid of p-benzoyl base seitan 1.5g, 12 heteropoly tungstate 2.1g, 1,3,5-triazines-2,4,6-tricarboxylic acid 1.8g, adds 38.3g water and mixes, and then mixes with A component; Obtain 80g composite scale inhibiting solution;
With the liquid medicine preparing by the drug concentration of 80mg/L when adding in test water, the effective concentration of composite scale-inhibiting corrosion inhibitor is 18mg/L;
Test raw water quality is: ammonia nitrogen 1.5mg/L, and Ca2+ 174mg/L, total alkalinity 419mg/L, Cl-83.5mg/L, SO42-330mg/L, pH 6.4, CODCr 98mg/L.
embodiment 6
Taking 2-pentadecyl-1(maleinamide)-ethyl-tetrahydroglyoxaline 12g, sodium N-lauroyl sarcosinate 2.3g mix with 4g glycerine; Obtain A component;
Take treated starch 17g, the acid of p-benzoyl base seitan 1.5g, 12 heteropoly tungstate 2.1g, 1,3,5-triazines-2,4,6-tricarboxylic acid 1.5g, adds 39.6g water and mixes, and then mixes with A component; Obtain 80g composite scale inhibiting solution;
With the liquid medicine preparing by the drug concentration of 80mg/L when adding in test water, the effective concentration of composite scale-inhibiting corrosion inhibitor is 20mg/L;
Test raw water quality is: ammonia nitrogen 1.5mg/L, and Ca2+ 174mg/L, total alkalinity 419mg/L, Cl-83.5mg/L, SO42-340mg/L, pH 6.4, CODCr 105mg/L.
comparative example 1
Take treated starch 18g and add 62g water and mix, obtain 80g composite scale inhibiting solution;
With the liquid medicine preparing by the drug concentration of 80mg/L when adding in test water, the effective concentration of composite scale-inhibiting corrosion inhibitor is 15mg/L;
Test raw water quality is: ammonia nitrogen 20mg/L, and Ca2+ 165mg/L, total alkalinity 263mg/L, Cl-110.6mg/L, SO42-334mg/L, pH 9.3, CODCr-48mg/L.
comparative example 2
Taking 2-pentadecyl-1(maleinamide)-ethyl-tetrahydroglyoxaline 12g adds 68g water and mixes, and obtains 80g, scale inhibitor liquid;
With the liquid medicine preparing by the drug concentration of 80mg/L when adding in test water, the effective concentration of composite scale-inhibiting corrosion inhibitor is 15mg/L;
Test raw water quality is: ammonia nitrogen 20mg/L, and Ca2+ 165mg/L, total alkalinity 263mg/L, Cl-110.6mg/L, SO42-334mg/L, pH 9.3, CODCr-48mg/L.
comparative example 3
Take 2-pentadecyl-1(maleinamide)-ethyl-tetrahydroglyoxaline 12g, get treated starch 18g, add 50g water and mix, obtain 80g composite scale inhibiting solution;
With the liquid medicine preparing by the drug concentration of 80mg/L when adding in test water, the effective concentration of composite scale-inhibiting corrosion inhibitor is 15mg/L;
Test raw water quality is: ammonia nitrogen 20mg/L, and Ca2+ 165mg/L, total alkalinity 263mg/L, Cl-110.6mg/L, SO42-334mg/L, pH 9.3, CODCr-48mg/L.
comparative example 4
Taking 2-pentadecyl-1(maleinamide)-ethyl-tetrahydroglyoxaline 12g mixes with 4g glycerine; Obtain A component;
Take treated starch 18g, p-benzoyl base seitan acid 1.4g, 1,3,5-triazines-2,4,6-tricarboxylic acid 1.8g, adds 42.8g water and mixes, and then mixes with A component; Obtain 80g composite scale inhibiting solution;
With the liquid medicine preparing by the drug concentration of 80mg/L when adding in test water, the effective concentration of composite scale-inhibiting corrosion inhibitor is 15mg/L;
Test raw water quality is: ammonia nitrogen 20mg/L, and Ca2+ 165mg/L, total alkalinity 263mg/L, Cl-110.6mg/L, SO42-334mg/L, pH 9.3, CODCr-48mg/L.
comparative example 5
Taking 2-pentadecyl-1(maleinamide)-ethyl-tetrahydroglyoxaline 12g, sodium N-lauroyl sarcosinate 2.5g mix with 4g glycerine; Obtain A component;
Take treated starch 18g, 12 heteropoly tungstate 2.0g, add 41.5g water and mix, and then mix with A component; Obtain 80g composite scale inhibiting solution;
With the liquid medicine preparing by the drug concentration of 80mg/L when adding in test water, the effective concentration of composite scale-inhibiting corrosion inhibitor is 15mg/L;
Test raw water quality is: ammonia nitrogen 20mg/L, and Ca2+ 165mg/L, total alkalinity 263mg/L, Cl-110.6mg/L, SO42-334mg/L, pH 9.3, CODCr-48mg/L.
By the above-mentioned concentration that adds, carry out static-state scale inhibition test and rotary hanging plate corrosion test, resistance calcium carbonate scale rate and corrosion speed are in Table 1:
The scale inhibitor effect of table 1 corrosion inhibiting and descaling agent
| Embodiment | Resistance calcium carbonate scale rate (%) | Corrosion of carbon steel speed (mm/a) |
| Embodiment 1 | 99.7 | 0.023 |
| Embodiment 2 | 99.9 | 0.023 |
| Embodiment 3 | 99.7 | 0.026 |
| Embodiment 4 | 99.6 | 0.027 |
| Embodiment 5 | 99.6 | 0.026 |
| Embodiment 6 | 99.6 | 0.027 |
| Comparative example 1 | 94.5 | 0.041 |
| Comparative example 2 | 93.9 | 0.037 |
| Comparative example 3 | 94.2 | 0.038 |
| Comparative example 4 | 93.4 | 0.036 |
| Comparative example 5 | 93.5 | 0.035 |
Claims (2)
1. containing an ammonia nitrogen recirculated cooling water composite scale-inhibiting corrosion inhibitor, it is characterized in that, by following component, formed;
2-pentadecyl-1(maleinamide) 12 parts of-ethyl-tetrahydroglyoxalines,
Treated starch 15-20 part,
P-benzoyl base seitan acid 1.3-1.5 part,
Sodium N-lauroyl sarcosinate 2.3-2.8 part,
12 heteropoly tungstate 1.7-2.5 parts,
1,3,5-triazines-2,4,6-tricarboxylic acid 1.5-2.1 part,
Glycerine 3-5 part;
Described umber is weight part.
2. according to claim 1 containing ammonia nitrogen recirculated cooling water composite scale-inhibiting corrosion inhibitor, it is characterized in that:
2-pentadecyl-1(maleinamide) 12 parts of-ethyl-tetrahydroglyoxalines,
18 parts of treated starches,
1.4 parts of p-benzoyl base seitan acid,
2.5 parts of sodium N-lauroyl sarcosinates,
12 2.0 parts of heteropoly tungstates,
1,3,5-triazines-2,1.8 parts of 4,6-tricarboxylic acid,
4 parts of glycerine.
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| CN201310619210.4A CN103601305B (en) | 2013-11-29 | 2013-11-29 | Composite scale and corrosion inhibitor for ammonium-nitrogen-containing circulating cooling water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310619210.4A CN103601305B (en) | 2013-11-29 | 2013-11-29 | Composite scale and corrosion inhibitor for ammonium-nitrogen-containing circulating cooling water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105254039A (en) * | 2015-10-10 | 2016-01-20 | 无棣华信石油技术服务有限公司 | Solid corrosion inhibition and sterilization type antisludging agent for oil field and preparing method thereof |
| CN106591846A (en) * | 2016-12-24 | 2017-04-26 | 叶宗瑞 | Scale scavenging agent and preparation method thereof |
| CN108706750A (en) * | 2018-07-18 | 2018-10-26 | 林文标 | A kind of modified starch antisludging agent and preparation method thereof |
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| CN105254039A (en) * | 2015-10-10 | 2016-01-20 | 无棣华信石油技术服务有限公司 | Solid corrosion inhibition and sterilization type antisludging agent for oil field and preparing method thereof |
| CN106591846A (en) * | 2016-12-24 | 2017-04-26 | 叶宗瑞 | Scale scavenging agent and preparation method thereof |
| CN108706750A (en) * | 2018-07-18 | 2018-10-26 | 林文标 | A kind of modified starch antisludging agent and preparation method thereof |
| CN108706750B (en) * | 2018-07-18 | 2021-05-04 | 广州联福新材料科技有限公司 | Modified starch scale inhibitor and preparation method thereof |
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